CN111412290B

CN111412290B - Sand valve and sandblast rust cleaning system

Info

Publication number: CN111412290B
Application number: CN201910011710.7A
Authority: CN
Inventors: 王长江; 闫洁; 贾超; 孟繁研; 刘然; 刘建涛; 于金柱; 郭奇超; 冯大勇
Original assignee: China National Petroleum Corp; China Petroleum Pipeline Engineering Corp; Pipeline Research Institute of CNPC
Current assignee: China National Petroleum Corp; China Petroleum Pipeline Engineering Corp; Pipeline Research Institute of CNPC
Priority date: 2019-01-07
Filing date: 2019-01-07
Publication date: 2021-11-02
Anticipated expiration: 2039-01-07
Also published as: CN111412290A

Abstract

The invention discloses a sand valve and a sand blasting and rust removing system, and relates to the field of mechanical design. When the elastic component (03) of the sand valve is in a natural state, the plugging piece (02) can be in contact with the target sand opening and plug the target sand opening. When the adjusting piece (07) rotates the rotating shaft (05) through the connecting rod (06), the rotating shaft (05) can drive the pressure head (04) to compress the elastic component (03), so that the plugging piece (02) is separated from the target sand opening. According to the sand valve provided by the embodiment of the invention, the telescopic state of the elastic component (03) can be controlled through the rotation of the rotating shaft (05), the control on the distance between the plugging piece (02) and a target sand opening is realized, and then the adjustment on the sand supply amount of the sand valve can be realized. The sand supply amount can be adjusted without rotating the manual wheel, so that the problem that the sand supply amount is difficult to adjust due to sand material blockage can be solved.

Description

Sand valve and sandblast rust cleaning system

Technical Field

The invention relates to the field of mechanical design, in particular to a sand valve and a sand blasting and rust removing system.

Background

At present, a sand valve in a sand blasting and rust removing system is a straight hole type sand valve, the sand valve is provided with a sand inlet (also called as an upper end sand supply port) and a sand outlet (also called as a lower end sand supply port), sand entering from the sand inlet can fall into the sand outlet, and the sand valve is discharged. The sand valve can further comprise a manual wheel arranged on the outer side of the sand valve and a plugging piece arranged inside the sand valve and connected with the manual wheel, and the plugging piece can be used for plugging the sand outlet.

In the correlation technique, can adjust the interval between this shutoff piece and this sand outlet through rotating manual wheel, can control the confession sand volume of this sand valve. Wherein, the sand supply amount refers to the amount of sand material discharged from the sand valve.

However, the manual wheel is difficult to rotate due to the blockage of the sand, and the efficiency of adjusting the sand supply amount of the sand valve through the manual wheel is low.

Disclosure of Invention

The embodiment of the invention provides a sand valve and a sand blasting rust removing system, which can solve the problem of low adjusting efficiency of adjusting the sand supply amount of the sand valve through a manual wheel in the related art. The technical scheme is as follows:

in one aspect, a sand valve is provided, comprising: the device comprises a valve body, a plugging piece, an elastic component, a pressure head, a rotating shaft, a connecting rod and an adjusting piece;

the two ends of the valve body are respectively provided with a sand inlet and a sand outlet, and the plugging piece, the elastic assembly and the pressure head are all arranged in the valve body;

one end of the elastic component is fixedly connected with the inner wall of the valve body, the other end of the elastic component is fixedly connected with one end of the plugging piece, the plugging piece is positioned on one side of the elastic component close to a target sand port, when the elastic component is in a natural state, the plugging piece plugs the target sand port, and the target sand port is the sand inlet or the sand outlet;

a first groove is formed in the plugging piece, one end of the pressure head is arranged in the first groove, and the other end of the pressure head is fixedly connected with one end of the rotating shaft;

a through hole is formed in the side wall of the valve body, the other end of the rotating shaft penetrates through the through hole to be fixedly connected with one end of the connecting rod, the axis of the connecting rod is intersected with the axis of the rotating shaft, and the axis of the rotating shaft is not parallel to the telescopic direction of the elastic assembly;

the regulating part for the valve body is fixed to be set up, just the regulating part with the other end swing joint of connecting rod is used for through the connecting rod rotates the pivot, the pivot drives the pressure head compression elastic component, the shutoff piece is along keeping away from the direction removal of target sand mouth.

Optionally, the adjusting member includes: the telescopic cylinder comprises a cylinder barrel and a telescopic rod, and the telescopic direction of the telescopic rod is not parallel to the axis of the rotating shaft;

one end of the telescopic rod is arranged in the cylinder barrel, and the other end of the telescopic rod is used for being connected with the other end of the connecting rod.

Optionally, the adjusting member further includes: the axis of the push rod is parallel to the telescopic direction of the telescopic rod;

one end of the push rod is connected with the other end of the telescopic rod, a second groove is formed in the other end of the push rod, the other end of the connecting rod is located in the second groove, and the extending direction of the second groove is parallel to the axis of the push rod.

Optionally, the push rod is a hollow rod body, and a thread is arranged on the inner wall of one end of the push rod; the adjusting member further includes: locking the nut;

the outer wall of the other end of the telescopic rod is provided with threads, and the locking nut and one end of the push rod are both sleeved on the other end of the telescopic rod and are both in threaded connection with the other end of the telescopic rod;

the end face of one end of the locking nut is in contact with the end face of one end of the push rod.

Optionally, the adjusting member further includes: a pin shaft;

the pin shaft is arranged in the second groove, and the axis of the pin shaft is perpendicular to the axis of the push rod.

Optionally, the sand valve further comprises: the rotating shaft sleeve comprises a rotating shaft sleeve and a plurality of bearings;

the rotating shaft sleeve comprises a hollow cylinder, a first annular fixing plate and a second annular fixing plate, and the cylinder, the first annular fixing plate and the second annular fixing plate are coaxial;

the first annular fixing plate is sleeved on the rotating shaft, one end of the cylinder body is sleeved on the first annular fixing plate, and the second annular fixing plate is sleeved on the other end of the cylinder body;

the bearings are arranged in the cylinder body and positioned between the first annular fixing plate and the second annular fixing plate, each bearing is sleeved on the rotating shaft, and the cylinder body, the bearings and the rotating shaft are coaxial;

the cylinder body is arranged in the through hole, and the second annular fixing plate is located outside the valve body and connected with the side wall of the valve body.

Optionally, the sand valve further comprises: at least one sealing ring;

each sealing ring is sleeved on the rotating shaft and is in contact with the side wall of the through hole.

Optionally, the elastic component includes: a support and a spring;

one end of the support is fixedly connected with the inner wall of the valve body, and the other end of the support is fixedly connected with one end of the spring;

the other end of the spring is fixedly connected with the plugging piece.

Optionally, the sand valve further comprises: producing a sand nipple;

a connecting hole is formed in the side wall of the sand outlet nipple, one end of the valve body, which is provided with the sand outlet, is connected with the side wall of the sand outlet nipple, and the sand outlet is communicated with the sand outlet nipple through the connecting hole;

one end of the sand outlet short section is used for being connected with a sand blasting pipe, and the other end of the sand outlet short section is used for being connected with an air supply pipe.

Optionally, the sand valve further comprises a connector;

the two ends of the connecting piece are annular, one end of the connecting piece is sleeved on the adjusting piece, and the other end of the connecting piece is sleeved on the sand outlet short section.

In another aspect, a blast rust removal system is provided, the system comprising: a sand storage tank and a sand valve as described in the above aspect;

the sand storage tank is connected with the sand inlet of the sand valve and used for providing sand materials for the sand valve.

The technical scheme provided by the invention has the beneficial effects that at least:

the invention provides a sand valve, wherein when an elastic component of the sand valve is in a natural state, a plugging piece can be in contact with a target sand opening and plugs the target sand opening. When the adjusting piece rotates the rotating shaft through the connecting rod, the rotating shaft can drive the pressure head to compress the elastic assembly, so that the plugging piece is separated from the target sand port, and the sand valve can realize sand supply. The sand valve provided by the invention can control the telescopic state of the elastic assembly through the rotation of the rotating shaft, and realize the control of the conduction state of a target sand opening. And, through the turned angle of regulating part control pivot, can control the pressure size that the pressure head applyed to this elastic component, and then can adjust elastic component's compression degree, realize the control to the interval between shutoff piece and the target sand mouth, then can realize the regulation to the sand supply volume of sand valve. The sand valve provided by the invention has the advantages that the sand supply amount does not need to be adjusted by rotating the manual wheel, the problem that the sand supply amount is difficult to adjust due to sand material blockage can be solved, the adjusting efficiency of the sand supply amount of the sand valve provided by the invention is higher, the use flexibility is higher, and the operation is simple.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic illustration of a first cross-section of a sand valve provided by an embodiment of the present invention;

FIG. 2 is a schematic illustration of a second cross-section of a sand valve provided by an embodiment of the present invention;

FIG. 3 is a schematic structural view of a sand valve provided by an embodiment of the present invention;

FIG. 4 is a schematic structural view of another sand valve provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of yet another sand valve provided by an embodiment of the present invention;

FIG. 6 is a schematic illustration of a first cross-section of another sand valve provided by an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a sand blasting rust removal system provided by an embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiment of the invention provides a sand valve, which can solve the problem that the sand supply adjusting efficiency of a straight hole type sand valve in the related technology is low. Fig. 1 is a schematic view of a first cross section of a sand valve provided by an embodiment of the invention, and fig. 2 is a schematic view of a second cross section of the sand valve provided by the embodiment of the invention, wherein the first cross section is perpendicular to the second cross section. Fig. 3 is a schematic structural diagram of a sand valve according to an embodiment of the present invention.

As can be seen with reference to fig. 1, 2 and 3, the sand valve may comprise: valve body 01, shutoff piece 02, elastic component 03, pressure head 04, pivot 05, connecting rod 06 and adjusting part 07. The both ends of this valve body 01 are provided with into sand mouth 011 and sand outlet 012 respectively, and shutoff piece 02, elastic component 03 and this pressure head all set up in this valve body 01.

One end of the elastic component 03 is fixedly connected with the inner wall of the valve body 01, the other end of the elastic component 03 is fixedly connected with one end of the plugging piece 02, and the plugging piece 02 is positioned on one side, close to the target sand opening, of the elastic component 03. When the elastic component 03 is in a natural state, the blocking piece 02 can block the target sand port, which can be the sand inlet 011 or the sand outlet 012. For example, in the structure shown in fig. 1 and 2, the target sand inlet is the sand inlet 011, that is, the plugging member 02 can plug the sand inlet 011.

The plugging member 02 is provided with a first groove 021, one end of the pressure head 04 can be arranged in the first groove 021, and the other end of the pressure head 04 is fixedly connected with one end of the rotating shaft 05. Optionally, the first groove 021 may be a through groove penetrating through the plugging member 02, or may also be a groove body not penetrating through the plugging member 02, which is not limited in the embodiment of the present invention.

A through hole (not shown in the figure) is formed in the side wall of the valve body 01, the other end of the rotating shaft 05 can penetrate through the through hole to be fixedly connected with one end of the connecting rod 06, the axis of the connecting rod 06 can be intersected with the axis of the rotating shaft 05, and the axis of the rotating shaft 05 is not parallel to the extending and retracting direction of the elastic component 03. This regulating part 07 is fixed the setting for this valve body 01, and this regulating part 07 and the other end swing joint of this connecting rod 06 for rotate this pivot 05 through this connecting rod 06, this pivot 05 can drive pressure head 04 and compress this elastic component 03, makes this shutoff 02 remove along the direction of keeping away from this target sand mouth.

In summary, embodiments of the present invention provide a sand valve, wherein when an elastic component of the sand valve is in a natural state, the plugging member can contact with the target sand opening and plug the target sand opening. When the adjusting piece rotates the rotating shaft through the connecting rod, the rotating shaft can drive the pressure head to compress the elastic assembly, so that the plugging piece is separated from the target sand port, and the sand valve can realize sand supply. The sand valve provided by the embodiment of the invention can control the telescopic state of the elastic assembly through the rotation of the rotating shaft, so that the conduction state of a target sand port can be controlled. And, through the turned angle of regulating part control pivot, can control the pressure size that the pressure head applyed to this elastic component, and then can adjust elastic component's compression degree, realize the control to the interval between shutoff piece and the target sand mouth, then can realize the regulation to the sand supply volume of sand valve. According to the sand valve provided by the embodiment of the invention, the sand supply amount does not need to be adjusted by rotating the manual wheel, the problem that the sand supply amount is difficult to adjust due to sand material blockage can be solved, the sand supply amount adjusting efficiency of the sand valve provided by the embodiment of the invention is higher, the use flexibility is higher, and the operation is simple.

In the embodiment of the present invention, the sand inlet 011, the sand outlet 012, the plugging member 02 and the elastic member 03 can be coaxial. And, the axis of the rotating shaft 05 can be perpendicular to the extending and retracting direction of the elastic component 03 and the axis of the connecting rod 06, respectively.

Alternatively, referring to fig. 1, the plugging member 02 may be a ball valve body, that is, one end of the plugging member 02 close to the target sand port may be hemispherical. Alternatively, the end of the plug 02 near the target sand port may be conical or cylindrical. The embodiment of the invention does not limit the method, and only the plugging piece 02 is required to plug the target sand port.

In an alternative implementation, the pressing head 04 and the rotating shaft 05 may be of an integral structure, or the other end of the pressing head 04 may be welded to one end of the rotating shaft 05, so as to connect the pressing head 04 and the rotating shaft 05 together.

In another alternative implementation, the ram 04 and the shaft 05 may be threaded or riveted. For example, the other end of the pressing head 04 may be provided with a connection through hole, one end of the rotating shaft 05 may be provided with a connection screw hole, and a bolt or a rivet may pass through the first pressing piece and the connection through hole to be screw-connected with the connection screw hole, thereby connecting the pressing head 04 and the rotating shaft 05 together.

In an embodiment of the present invention, the outer diameter of the rotating shaft 05 may be smaller than the diameter of the through hole on the sidewall of the valve body 01, so as to prevent the rotating shaft 05 from wearing the through hole when rotating.

Optionally, one end of the connecting rod 06 is provided with a fixing hole. And the diameter of this fixed orifices can slightly be less than the external diameter of this pivot 05, and the other end of this pivot 05 can set up in the fixed orifices of the one end of this connecting rod 06, also be interference fit between this fixed orifices and this pivot 05 to when guaranteeing this connecting rod 06 to rotate, can drive this pivot 05 and rotate.

Further, referring to fig. 3, the sand valve may further include: and the second pressing piece 08 is in contact with the end face, away from the valve body 01, of one end of the connecting rod 06. The other end of the rotating shaft 05 is provided with a connecting threaded hole, and a bolt can be arranged in the connecting threaded hole through the second pressing piece 08. Owing to be provided with second preforming 08, can prevent this sand valve in the later stage use, this connecting rod 06 breaks away from with this pivot 05 to effectively guaranteed the structural stability of this sand valve.

Alternatively, referring to fig. 2, the elastic member 03 includes: seat 031, and spring 032. One end of the support 031 is fixedly connected to the inner wall of the valve body 01, and the other end of the support 031 is fixedly connected to one end of the spring 032. The other end of the spring 032 is fixedly connected with the plugging member 02.

For example, the seat 031 and the valve body 01 may be welded or may be an integral structure, and the spring 032 and the seat 031 and the blocking member 02 may be welded.

As can be seen in fig. 1 and 2, the seat 031 can include a seat body 0311 and a plurality of legs 0312. The seat body 0311 is fixedly connected to the spring 032, one end of each leg 0312 is fixedly connected to the seat body 0311, and the other end is fixedly connected to the inner wall of the valve body 01.

For example, as shown in fig. 1 and 2, an inner wall of an end of the valve body 01 near the sand outlet 012 may be tapered, that is, an end of the valve body 01 near the sand outlet 012 may be funnel-shaped. The terminal surface of every landing leg 0312 other end can be the cambered surface, and the radian of this cambered surface is unanimous with the radian of valve body 01 inner wall to guarantee the stability of being connected between this support 031 and this valve body 01.

As an alternative implementation, as shown in fig. 3, the adjusting member 07 may be a bar structure disposed at the other end of the connecting rod 06, and the axis of the adjusting member 07 is perpendicular to the axis of the connecting rod 06. Referring to fig. 3, the adjusting member 07 may be provided with a plurality of adjusting holes 07a arranged along an axis of the adjusting member 07. The other end of the connecting rod 06 may be provided with a connecting screw hole. The rotation angle of the connecting rod 06 can be adjusted by aligning the connecting screw hole with the adjusting holes 07a at different positions on the adjusting member 07 and setting the bolt in the aligned holes.

As another alternative implementation, as shown in fig. 4, the adjusting part 07 may include: the telescopic cylinder 071 may include a cylinder 0711 and a telescopic rod 0712, and a telescopic direction of the telescopic rod 0712 may be non-parallel to an axis of the rotating shaft 05. One end of the telescopic rod 0712 can be arranged in the cylinder 0711 of the telescopic cylinder 071, and the other end of the telescopic rod 0712 is used for connecting with the other end of the connecting rod 06. For example, the telescopic direction of the telescopic rod 0712 can be perpendicular to the axis of the rotating shaft 05.

In the embodiment of the present invention, the telescopic rod 0712 can extend from the cylinder 0711 or retract into the cylinder 0711. When needs supply sand through this sand valve, can control this telescopic link 0712 and stretch out from cylinder 0711, promote this connecting rod 06 and rotate, this connecting rod 06 can drive this pivot 05 and rotate, and this pivot 05 can drive pressure head 04 and compress this elastic component 03 for this shutoff 02 keeps away from the target sand mouth of this valve body 01, realizes supplying sand. After the sand supply is completed, the telescopic rod 0712 can be controlled to retract into the cylinder 0711, at this time, the telescopic rod 0712 cannot push the connecting rod 06 to rotate through the push rod 072, the pressure head 04 no longer applies pressure to the elastic component 03, and the plugging piece 02 can move in the direction close to the target sand opening under the action of the restoring force of the elastic component 03, and contact with the target sand opening to plug the target sand opening.

Fig. 5 is a schematic structural diagram of another sand valve provided in an embodiment of the present invention. As can be seen from fig. 4 and 5, the adjusting member may further include: the axis of the push rod 072 can be parallel to the telescopic direction of the telescopic rod 0712.

Referring to fig. 5, one end of the push rod 072 can be connected to the other end of the telescopic rod 0712, the other end of the push rod 072 is provided with a second groove 0721, the other end of the connecting rod 06 is located in the second groove 0721, and the extending direction of the second groove 0721 can be parallel to the axis of the push rod 072.

Alternatively, the second groove 0721 may be a groove body that does not penetrate the push rod 072. Alternatively, referring to fig. 5, the second groove 0721 may also be a through groove extending through the push rod 072. Since the other end of the connecting rod 06 is located in the second groove 0721 on the push rod 072, it can be ensured that the telescopic rod 0712 can push the connecting rod 06 to rotate through the push rod 072 when extending every time.

In the embodiment of the present invention, one end of the push rod 072 can be movably connected to the other end of the telescopic rod 0721. For example, one end of the push rod 072 can be sleeved with the other end of the telescopic rod 0712, and the length of the sleeved part of the two can be adjusted. Therefore, when the maximum extension length of the telescopic rod 0712 is unchanged, the length of the sleeve joint part of the telescopic rod 0712 and the push rod 072 can be adjusted to adjust the rotation range of the push rod 072 for pushing the connecting rod 06 to rotate, and further the movement range of the plugging piece 02 can be adjusted, so that the sand supply amount can be adjusted. The size of the rotation range of the connecting rod 06 is inversely related to the length of the sleeved part between the telescopic rod 0712 and the push rod 072. That is, the larger the length of the sleeved portion between the telescopic rod 0712 and the push rod 072 is, the shorter the total length between the telescopic rod 0712 and the push rod 072 is, the smaller the rotation range of the connecting rod 06 can be, and the smaller the movement range of the plugging member 02 can be.

In an alternative implementation, the push rod 072 may be a hollow rod body, the inner wall of one end of the push rod 072 may be provided with threads, and the inner diameter of one end of the push rod 072 is larger than the outer diameter of the other end of the telescopic rod 0712. Referring to fig. 4 and 5, the adjusting member 07 may further include: and a lock nut 073. The outer wall of the other end of the telescopic rod 073 is provided with threads, and one ends of the locking nut 073 and the push rod 072 can be sleeved on the other end of the telescopic rod 0712 and are in threaded connection with the other end of the telescopic rod 0712. An end surface of one end of the lock nut 073 may contact an end surface of one end of the push rod 072. That is, the other end of the telescopic rod 0712 can be arranged in the push rod 072, and the length of the socket portion between the telescopic rod 0712 and the push rod 072 is the length of the overlapping portion between the push rod 072 and the telescopic rod 0712.

In the embodiment of the present invention, when the telescopic rod 0712 extends, the push rod 072 is pushed to move in a direction away from the telescopic cylinder 071, and the connecting rod 06 is pushed to drive the rotating shaft 05 to rotate, so that the pressure head 04 applies pressure to the elastic component 03, and compresses the elastic component 03. However, when the pressing head 04 compresses the elastic component 03, the elastic component 03 will generate a reverse acting force on the pressing head 04, so that the rotating shaft 05 rotates reversely, the connecting rod 06 pushes the push rod 072 to move in a direction close to the telescopic cylinder 071, and meanwhile, when the axis of the connecting rod 06 is not parallel to the gravity direction, the connecting rod 06 will move in a direction close to the telescopic cylinder 071 due to the gravity action, and further push the push rod 072 to move in a direction close to the telescopic cylinder 071.

Because the telescopic rod 0712 is in threaded connection with the push rod 072, when the push rod 072 moves in a direction approaching the telescopic cylinder 071, there may be a relative movement between the telescopic rod 0712 and the push rod 072. Therefore, in the embodiment of the present invention, a locking nut 073 may be sleeved on one end of the telescopic rod 0712, and an end face of one end of the locking nut 073 contacts an end face of one end of the push rod 072. Because the locking nut 073 can be fastened to one end of the telescopic rod 0712 and blocks the push rod 072 from moving in the direction close to the telescopic cylinder 071, it can be ensured that when the connecting rod 06 applies a force to the push rod 072 in the direction close to the telescopic cylinder 071, the telescopic rod 0712 and the push rod 072 do not move relative to each other.

In another alternative implementation, the telescopic rod 0712 can be a hollow rod. The inner wall of the other end of the telescopic rod 0712 can be provided with threads, the outer wall of one end of the push rod 072 is provided with threads, and the inner diameter of the other end of the telescopic rod 0712 can be larger than the outer diameter of the push rod 072.

At this time, the other end of the telescopic rod 0712 and the locking nut 073 can be sleeved on one end of the push rod 072, and both are in threaded connection with one end of the push rod 072. The end face of one end of the locking nut 073 can contact with the end face of the other end of the telescopic rod 0712. At this time, one end of the push rod 072 can be arranged in the telescopic rod 0712, and the length of the sleeved part of the telescopic rod 0712 and the push rod 072 is the length of the overlapped part of the telescopic rod 0712 and the push rod 072.

As shown in fig. 4 and 5, the adjusting member may further include: a pin 074. The pin 074 may be disposed in the second groove 0721, and an axis of the pin 074 may be perpendicular to an axis of the push rod 072. When the push rod 072 pushes the connecting rod 06, the connecting rod 06 is close to the side wall of the telescopic cylinder 071 and contacts with the side wall of the pin 074. Because the side wall of the pin 074 is arc-shaped, the connecting rod 06 and the push rod 072 can be prevented from being directly contacted to cause mutual abrasion between the two, and the service life of the sand valve is prevented from being influenced.

Optionally, a connecting through hole is respectively disposed on the first side wall and the second side wall of the second groove 0721, the two connecting through holes share the same axis, and the diameters of the two connecting through holes are slightly smaller than the diameter of the pin 074. The pin 074 may be directly disposed in the two connecting through holes. Or, a blind hole is formed in one of the first side wall and the second side wall of the second groove 0721, a connection through hole coaxial with the blind hole is formed in the other side wall, the diameter of the connection through hole is slightly smaller than that of the pin 074, and the pin 074 can be arranged in the two holes, so that the connection between the pin 074 and the push rod 072 is realized. Wherein, the extending direction of the first side wall and the extending direction of the second side wall of the second groove 0721 are both parallel to the axis of the push rod 072. The implementation manner of the pin 074 is not limited in the embodiment of the present invention.

FIG. 6 is a schematic illustration of a first cross-section of another sand valve provided by an embodiment of the present invention. Referring to fig. 6, the sand valve may further include: the shaft sleeve 09, and a plurality of bearings 10. The spindle sleeve 09 includes a hollow cylinder 091, a first annular fixing plate 092, and a second annular fixing plate 093, and the cylinder 091, the first annular fixing plate 092, and the second annular fixing plate 093 may be coaxial.

The first annular fixing plate 092 may be sleeved on the rotating shaft 05, one end of the cylinder 091 may be sleeved on the first annular fixing plate 092, and the second annular fixing plate 093 may be sleeved on the other end of the cylinder 091. That is, the diameter of the outer ring of the first annular fixing plate 092 is equal to the inner diameter of the cylinder 091, and the outer diameter of the cylinder 091 is equal to the diameter of the inner ring of the second annular fixing plate 093.

The bearings 10 may be disposed in the cylinder 091 and located inside the cylinder 091, between the first annular fixing plate 092 and the second annular fixing plate 093, each bearing 10 may be sleeved on the rotating shaft 05, and the cylinder 091, the bearings 10 and the rotating shaft 05 are coaxial.

The cylinder 091 is disposed in the through hole, and the second annular fixing plate 093 is located outside the valve body 01 and connected to the sidewall of the valve body 01.

The end surface of the first annular fixing plate 092 away from the bearing 10 and the end surface of one end of the cylinder 091 may be coplanar, and the end surface of the second annular fixing plate 093 away from the bearing 10 and the end surface of the other end of the cylinder 091 may be coplanar.

Alternatively, the cylinder 091, the first annular fixing plate 092 and the second annular fixing plate 093 may be an integral structure.

Referring to fig. 3, 4 and 5, the second annular fixing plate 093 of the rotating shaft sleeve 09 may be provided with a plurality of shaft sleeve holes arranged in a circumferential array along the second annular fixing plate 093. Correspondingly, a plurality of threaded holes corresponding to the plurality of bushing holes of the second annular fixing plate 093 one to one may also be provided on the sidewall of the valve body 01. Each boss hole of the second annular fixing plate 093 may be aligned with a screw hole of the valve body 01, and a bolt may be provided in the aligned hole, thereby coupling the rotary boss 09 with the valve body 01. Alternatively, the axle sleeve hole of the second annular fixing plate 093 may be a threaded hole.

In an embodiment of the present invention, the sand valve may further include: and a clamp spring. The clamp spring can be sleeved on the rotating shaft 05 and is positioned outside the valve body 01. The circlip may contact the inner ring of one bearing 10 of the plurality of bearings 10 that is close to the connecting rod 06. The circlip may be used to prevent the bearing 10 from moving axially along the shaft 05.

The at least one sealing ring 11 can be used for sealing the through hole, so that when the sand valve works, sand in the valve body 01 enters the third groove through a gap between the through hole and the rotating shaft 05 and contacts with the bearings 10 to abrade the bearings 10, and the service life of the sand valve is prevented from being influenced.

Referring to fig. 2 to 6, the sand valve may further include: and a sand production nipple 12. The side wall of this sand outlet nipple 12 is provided with the connecting hole, and the one end that this valve body 01 was provided with sand outlet 012 is connected with the side wall of this sand outlet nipple 12, and this sand outlet 012 can communicate with this sand outlet nipple 12 through this connecting hole. One end of the sand outlet nipple 12 is used for connecting a sand blasting pipe, and the other end of the sand outlet nipple 12 is used for connecting an air supply pipe. Illustratively, the valve body 01 and the sand nipple 12 may be welded or may be an integral structure.

Optionally, referring to fig. 3, 4 and 5, one end of the sand blasting nipple 12 is provided with an annular convex edge 121, the inner wall of the sand blasting pipe is provided with an annular groove corresponding to the convex edge 121, and one end of the sand blasting nipple 12 and the sand blasting pipe can be clamped. The outer wall of the other end of the sand producing nipple 12 is provided with threads, the inner wall of the air supply pipe is provided with threads, and the other end of the sand producing nipple 12 is in threaded connection with the air supply pipe.

As shown in fig. 3 to 6, the sand valve may further include a connection 13. The both ends of this connecting piece 13 are the ring shape, and the one end of this connecting piece 13 cup joints on this regulating part 07, and the other end of this connecting piece 13 cup joints 12 on this sand nipple, because 12 and valve body 01 fixed connection on this sand nipple, consequently with regulating part 07 and this sand nipple 12 fastening connection, can make this regulating part 07 set up for this valve body 01 is fixed. Wherein, the internal diameter of the ring that cup joints with this regulating part 07 in this connecting piece 13 can equal (or slightly be less than) this regulating part 07's external diameter, and the internal diameter of the ring that cup joints with this sand production nipple 12 in this connecting piece 13 can equal (or slightly be less than) this sand production nipple 13's external diameter to guarantee that this connecting piece 13 can be in the same place with this regulating part 07 and this sand production nipple 13 fixed connection respectively.

Optionally, the adjusting member 07 may also be fixedly connected to the sidewall of the valve body 01 through a connecting member 07, which is not limited in the embodiment of the present invention.

Referring to fig. 2, the valve body 01 may include: a connector 013, a valve cover 014 and a valve body 015. Both the valve body main body 015 and the connector 013 can be hollow structures, the valve cover 014 is connected with one end of the valve body main body 015, the valve cover 014 is provided with a sand inlet 011, and the other end of the valve body main body 015 is provided with a sand outlet 012. The connector 013 is connected to the valve cover 014 and is connected to the valve body 015 through the sand inlet 011.

For example, the valve cover 014 may be disc-shaped, and the valve cover 014 is provided with a plurality of threaded holes arranged in an array along the circumferential direction of the valve cover 014, and the end face of the one end of the valve body main body 015 is also provided with a plurality of threaded holes corresponding to the plurality of threaded holes on the valve cover 014 one to one. Each threaded hole on the bonnet 014 may be aligned with a corresponding threaded hole on the valve body 015, and a bolt may be placed in the aligned threaded holes to effect connection of the bonnet 014 to the valve body 015.

Optionally, the through hole inside the connector 013 may be funnel-shaped or may also be a circular through hole, which is not limited in the embodiment of the present invention.

The operation of the sand valve will be described by taking the sand valve shown in fig. 4 as an example. When the sand is required to be supplied through the sand valve, the telescopic rod 0712 of the telescopic cylinder 071 can be controlled to extend out of the cylinder 0711, the connecting rod 06 is pushed by the push rod 072 to rotate by a certain angle from the initial position, the connecting rod 06 can drive the rotating shaft 05 to rotate, so that the pressure head 04 is driven to compress the spring 032 of the elastic component 03, the plugging piece 02 is moved in the direction away from the target sand port, the plugging piece 02 is separated from the target sand port, and sand can pass through the sand inlet 011 and then enter the valve body 01. Subsequently, sand is supplied through the sand outlet 012 into the sand nipple 12.

When the sand valve is not needed to supply sand, the telescopic rod 0712 of the telescopic cylinder 071 can be controlled to retract into the cylinder barrel 0711, at this time, the telescopic rod 0712 cannot push the connecting rod 06 to rotate through the push rod 072, the pressure head 04 no longer applies pressure to the elastic component 03, and can move in the direction close to the target sand port under the action of the spring 032, and simultaneously drive the rotating shaft 05 and the connecting rod 06 to return to the initial position. The plugging member 02 can also move in a direction close to the target sand port under the action of the spring 032, and closely fit with the target sand port to plug the target sand port.

In summary, embodiments of the present invention provide a sand valve, wherein when an elastic component of the sand valve is in a natural state, the plugging member can contact with the target sand opening and plug the target sand opening. When the adjusting piece rotates the rotating shaft through the connecting rod, the rotating shaft can drive the pressure head to compress the elastic assembly, so that the plugging piece is separated from the target sand port, and the sand valve can realize sand supply. The sand valve provided by the embodiment of the invention can control the telescopic state of the elastic assembly through the rotation of the rotating shaft, and realize the control on the conduction state of the target sand port. And, through the turned angle of regulating part control pivot, can control the pressure size that the pressure head applyed to this elastic component, and then can adjust elastic component's compression degree, realize the control to the interval between shutoff piece and the target sand mouth, then can realize the regulation to the sand supply volume of sand valve. According to the sand valve provided by the embodiment of the invention, the sand supply amount does not need to be adjusted by rotating the manual wheel, the problem that the sand supply amount is difficult to adjust due to sand material blockage can be solved, the sand supply amount adjusting efficiency of the sand valve provided by the embodiment of the invention is higher, the use flexibility is higher, and the operation is simple.

An embodiment of the present invention further provides a sandblasting rust removal system, and referring to fig. 7, the system may include: a sand storage tank 14 and a sand valve 00 as shown in any one of figures 1 to 6. The sand storage tank 14 can be connected with the sand inlet 011 of the sand valve 00 through a sand supply pipeline 15, and is used for supplying sand material to the sand valve 00.

Optionally, an annular convex edge is arranged on the outer wall of one end, away from the plugging member 02, of the connector 013 of the valve body 01, an annular groove corresponding to the convex edge may be arranged on the inner wall of the sand supply pipeline 15, and the sand supply pipeline 15 may be clamped with the connector 013, so as to connect the sand storage tank 14 to the sand inlet 011 of the sand valve 00.

In the embodiment of the invention, as shown in fig. 7, the sandblasting rust removing system can further comprise a sandblasting pipe 16 and a gas supply pipe 17. One end of the sand production sub 12 may be connected (e.g., clamped) to the sand blast pipe 16, and the other end of the sand production sub 12 may be connected (e.g., threaded) to the gas supply pipe 17.

In the embodiment of the invention, the sand blasting and rust removing system can further comprise a control assembly. The control assembly may be electrically connected to the telescoping cylinder 071. The control assembly can control the pressure applied by the pressure head 04 to the elastic assembly 03 by adjusting the extension length of the telescopic rod 0712 according to the sand supply amount of the current sand valve 00, so as to control the distance between the plugging member 02 and the target sand port, realize the control of the sand supply amount of the sand valve 00, and enable the sand valve to supply sand smoothly. Therefore, the problem that the manual wheel cannot rotate due to sand material blockage when the sand supply amount of the straight hole type sand valve is adjusted by the manual wheel is avoided, the problems that the sand supply amount of the straight hole type sand valve is inconvenient to adjust and the adjusting efficiency is low are effectively solved, and the normal work of the sand blasting and rust removing system is guaranteed.

The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sand valve, characterised in that the sand valve (00) comprises: the device comprises a valve body (01), a plugging piece (02), an elastic component (03), a pressure head (04), a rotating shaft (05), a connecting rod (06) and an adjusting piece (07);

the sand inlet (011) and the sand outlet (012) are respectively arranged at two ends of the valve body (01), and the plugging piece (02), the elastic component (03) and the pressure head (04) are all arranged in the valve body (01);

one end of the elastic component (03) is fixedly connected with the inner wall of the valve body (01), the other end of the elastic component is fixedly connected with one end of the plugging piece (02), the plugging piece (02) is positioned on one side, close to a target sand port, of the elastic component (03), and when the elastic component (03) is in a natural state, the plugging piece (02) plugs the target sand port which is the sand inlet (011) or the sand outlet (012);

a first groove (021) is formed in the plugging piece (02), one end of the pressure head (04) is arranged in the first groove (021), and the other end of the pressure head (04) is fixedly connected with one end of the rotating shaft (05);

a through hole is formed in the side wall of the valve body (01), the other end of the rotating shaft (05) penetrates through the through hole to be fixedly connected with one end of the connecting rod (06), the axis of the connecting rod (06) is intersected with the axis of the rotating shaft (05), and the axis of the rotating shaft (05) is not parallel to the telescopic direction of the elastic component (03);

the adjusting piece (07) is fixedly arranged relative to the valve body (01), the adjusting piece (07) is movably connected with the other end of the connecting rod (06) and used for rotating the rotating shaft (05) through the connecting rod (06), the rotating shaft (05) drives the pressure head (04) to compress the elastic assembly (03), and the plugging piece (02) moves in the direction far away from the target sand opening;

the adjusting part (07) comprises: the telescopic cylinder (071) comprises a cylinder barrel (0711) and a telescopic rod (0712), and the telescopic direction of the telescopic rod (0712) is not parallel to the axis of the rotating shaft (05);

one end of the telescopic rod (0712) is arranged in the cylinder barrel (0711), and the other end of the telescopic rod (0712) is used for being connected with the other end of the connecting rod (06).

2. A sand valve according to claim 1, characterised in that the adjustment member (07) further comprises: a push rod (072), wherein the axis of the push rod (072) is parallel to the telescopic direction of the telescopic rod (0712);

one end of the push rod (072) is connected with the other end of the telescopic rod (0712), the other end of the push rod (072) is provided with a second groove (0721), the other end of the connecting rod (06) is positioned in the second groove (0721), and the extending direction of the second groove (0721) is parallel to the axis of the push rod (072).

3. A sand valve according to claim 2, characterised in that the push rod (072) is a hollow rod body and the inner wall of one end of the push rod (072) is provided with a thread; the adjusting part (07) further comprises: a lock nut (073);

the outer wall of the other end of the telescopic rod (0712) is provided with threads, and one ends of the locking nut (073) and the push rod (072) are sleeved on the other end of the telescopic rod (0712) and are in threaded connection with the other end of the telescopic rod (0712);

the end face of one end of the locking nut (073) is in contact with the end face of one end of the push rod (072).

4. A sand valve according to claim 2, characterised in that the adjustment member (07) further comprises: a pin (074);

the pin shaft (074) is arranged in the second groove (0721), and the axis of the pin shaft (074) is perpendicular to the axis of the push rod (072).

5. The sand valve as claimed in any one of claims 1 to 4, wherein the sand valve (00) further comprises: a rotating shaft sleeve (09) and a plurality of bearings (10);

the rotating shaft sleeve (09) comprises a hollow cylinder body (091), a first annular fixing plate (092) and a second annular fixing plate (093), and the cylinder body (091), the first annular fixing plate (092) and the second annular fixing plate (093) are coaxial;

the first annular fixing plate (092) is sleeved on the rotating shaft (05), one end of the cylinder body (091) is sleeved on the first annular fixing plate (092), and the second annular fixing plate (093) is sleeved on the other end of the cylinder body (091);

the bearings (10) are arranged in the cylinder body (091) and positioned between the first annular fixing plate (092) and the second annular fixing plate (093), each bearing (10) is sleeved on the rotating shaft (05), and the cylinder body (091), the bearings (10) and the rotating shaft (05) are coaxial;

the cylinder body (091) is arranged in the through hole, and the second annular fixing plate (093) is positioned outside the valve body (01) and is connected with the side wall of the valve body (01).

6. The sand valve as claimed in any one of claims 1 to 4, wherein the sand valve (00) further comprises: at least one sealing ring (11);

each sealing ring (11) is sleeved on the rotating shaft (05), and each sealing ring (11) is in contact with the side wall of the through hole.

7. A sand valve according to any one of the claims 1 to 4, characterised in that the resilient member (03) comprises: a seat (031) and a spring (032);

one end of the support (031) is fixedly connected with the inner wall of the valve body (01), and the other end of the support (031) is fixedly connected with one end of the spring (032);

the other end of the spring (032) is fixedly connected with the plugging piece (02).

8. The sand valve as claimed in any one of claims 1 to 4, wherein the sand valve (00) further comprises: a sand production nipple (12);

a connecting hole is formed in the side wall of the sand outlet nipple (12), one end, provided with the sand outlet (012), of the valve body (01) is connected with the side wall of the sand outlet nipple (12), and the sand outlet (012) is communicated with the sand outlet nipple (12) through the connecting hole;

one end of the sand production nipple (12) is used for connecting a sand blasting pipe (16), and the other end of the sand production nipple (12) is used for connecting an air supply pipe (17).

9. The sand valve as claimed in claim 8, characterised in that the sand valve (00) further comprises a connection (13);

the two ends of the connecting piece (13) are annular, one end of the connecting piece (13) is sleeved on the adjusting piece (07), and the other end of the connecting piece (13) is sleeved on the sand outlet short section (12).

10. A sandblasting rust removal system, characterized in that it comprises: -a sand tank (14) and a sand valve (00) according to any of claims 1 to 9;

the sand storage tank (14) is connected with a sand inlet (011) of the sand valve (00) and used for providing sand materials for the sand valve (00).